Impact of different artificial light intensities on some reproductive, productive performance aspects and blood picture of male quail

The luminosity and the temperature are factors that act directly in the photosynthetic process, where an elevation of the luminous intensity can cause a reduction of the assimilation of carbon, which consequently lowers the development of the cotton. The objective of this work was to assess the response of physiological parameters of cotton when subjected to different artificial light intensities. Two varieties of cotton IMA5801B2RF and IACRDN, were interacting with five artificial light intensities: 0 (control); 500; 1000; 1500 and 2000 μmol m−2 s−1 of photosynthetically active radiation provided by LED bulbs. The experiment was set in a randomized complete block design using a 2x5 factorial scheme. The variables measured were the rate of CO2 assimilation, transpiration, stomatal conductance, inner CO2 concentration in the substomatic chamber, and efficient use of water (for which a portable device of gas exchange was used). The cotton varieties responded positively to different luminous intensities until reaching the point of maximum saturation between 1400 and 1600 µmol m-1 s-1 of light, which provided a better rate of CO2 assimilation, concentration of CO2 in the substomatic chamber, and efficient use of water. Leaf transpiration and stomatal conductance showed a positive linear response with increasing light intensity. The ideal luminous intensity for the use of Infra-Red Gas Analyzer - IRGA was 1500 µmol m-1 s-1 for the tested cotton varieties.

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Effects of environment on spore germination and infection by broad bean rust (Uromyces viciae-fabae)

The Journal of Agricultural Science ◽

10.1017/s0021859696003930 ◽

1997 ◽

Vol 128 (1) ◽

pp. 73-78 ◽

Cited By ~ 11

Author(s):

M. E. JOSEPH ◽

T. F. HERING

Keyword(s):

Vicia Faba ◽

Spore Germination ◽

Broad Bean ◽

Infection Process ◽

Leaf Wetness ◽

Artificial Light ◽

Light Sources ◽

Bean Rust ◽

Light Intensities

Urediospores of U. viciae-fabae (broad bean rust) germinated well in the range 5–26 °C, with fastest germination at 20 °C. Exposure to 30 °C gave poor germination and damaged the spores. Infection of Vicia faba leaves depended on a moisture film. At 20 °C some infection occurred with only 4 h leaf wetness, but longer wet periods up to 24 h gave increased infection. At lower temperatures, the infection process was slower and final pustule numbers were smaller. Spore germination was delayed by daylight and by all artificial light sources that contained far-red (700–800 nm) wavelengths. The delay was increased at higher light intensities. When spores were subjected to alternating periods of light and darkness, it was found that 40 min of darkness was sufficient for the irreversible induction of germination at 20 °C.

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Observations on the change in the blood picture under the action of artificial light

Kazan medical journal ◽

10.17816/kazmj49957 ◽

1930 ◽

Vol 26 (2) ◽

pp. 143-148

Author(s):

P. V. Nechaev

Keyword(s):

Solar Spectrum ◽

Climatic Conditions ◽

Chemical Effect ◽

Ultraviolet Rays ◽

Artificial Light ◽

Blood Picture ◽

Childhood Diseases ◽

Prevention And Treatment ◽

Long Time ◽

Carbon Arc

Treatment with artificial light has recently been widely used in the prevention and treatment of many childhood diseases. Everyone knows the life-giving effect of the sun's rays on the growing body of a child. It is based mainly on the action of ultraviolet rays, which are rich in the solar spectrum. Due to climatic conditions, the use of natural sunlight is limited, especially in our latitudes, and for a long time there have been attempts to find a light source that would have a photo-chemical effect. close to the sun. These turned out to be a Bach mercury-quartz lamp and a carbon-arc lantern, rich in blue, violet and ultraviolet rays.

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EFFECTS OF DIETARY SUBSTITUTION WITH GUAR KORMA MEAL (Cyamposis tetragonoloba) ON PRODUCTIVE PERFORMANCE, NUTRIENTS DIGESTIBILITY, CARCASS CHARACTERISTICS AND HEMATOLOGICAL BLOOD PICTURE OF GROWING RABBITS

Egyptian Journal of Rabbit Science ◽

10.21608/ejrs.2017.41834 ◽

2017 ◽

Vol 27 (1) ◽

pp. 77-89

Author(s):

Amany Waly ◽

Fadila Easa ◽

Ayat Ragab ◽

Amal Hekal

Keyword(s):

Carcass Characteristics ◽

Productive Performance ◽

Blood Picture ◽

Dietary Substitution ◽

Nutrients Digestibility

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GROWTH RESPONSE OF INDOOR ORNAMENTAL PLANT SPECIES TO VARIOUS ARTIFICIAL LIGHT INTENSITIES (LED) IN AN INDOOR VERTICAL GARDEN

PLANT ARCHIVES ◽

10.51470/plantarchives.2021.v21.no1.096 ◽

2021 ◽

Vol 21 (No 1) ◽

Author(s):

Bharti Gautam ◽

R K Dubey ◽

Nirmaljit Kaur ◽

O P Choudhary

Keyword(s):

Plant Species ◽

Growth Response ◽

Scientific Information ◽

Well Being ◽

Ornamental Plant ◽

Plant Production ◽

Light Illumination ◽

Artificial Light ◽

Light Intensities ◽

Schefflera Arboricola

Urban population spends most of their time indoors leading to multiple problems. Making an indoor vertical garden and associating people to this new concept will help build the indoor environment with improved energy efficiency, indoor air quality, their improved health and well-being. Of all of the factors affecting plant growth in interiors, adequate light is by far the most important. LED is an efficient, energy-saving light source widely used in artificial light plant production systems. Lack of scientific information regarding the light intensity requirement for optimum growth of the indoor ornamental plant species under Indian conditions makes the study of utmost importance. Five indoor ornamental plant species namely, Schefflera arboricola, Dracaena godseffiana, Philodendron salloum, Syngonium podophyllum and Scindapsis aureus were planted in pots (5”) with soil less media arranged as vertical structures (6?11”x4?3”) aligned to interiors walls of a room. Four such structures/frames were fabricated, fertigated with 100 % of the Hoagland solution and artificially illuminated using LED lighting system (PWM controlled) with different light intensities i.e. 700-1100 lux (LI I), 1100-1500 lux (LI II), 1500- 1900 lux (LI III) and LI IV had no artificial light illumination (control). From the most effective positive response of plant species under study on the basis of their growth response towards different light intensities, it was concluded that Philodendron salloum responded best to LI I (700-1100 lux), Scindapsis aureus to LI II (1100-1500 lux), Dracaena godseffiana, Schefflera arboricola and Syngonium podophyllum to LI III (1500-1900 lux).

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